ipython/ipython — pull request #4437 by minrk (2013-10-24 22:36:49+00:00)
Title: don't compute etags in static file handlers

etags skip cache timing, which we probably don't want. If-Modified-Since should be good enough for us.

Symptom: it's between difficult and impossible to invalidate cached static files due to etag matches without actually deleting the cache.